virtualx-engine/thirdparty/speex/smallft.h
Rémi Verschelde 995dcb610c ogg/vorbis/opus/speex: Make them modules and unbundle thirdparty libs
Took the opportunity to undo the Godot changed made to the
opus source. The opus module should eventually be built in its
own environment to avoid polluting others with too many include
dirs and defines.

TODO: Fix the platform/ stuff for opus.
(cherry picked from commit d9a291f641)

speex module was only added while cherry-picking, as speex is removed
in the master branch but we don't want to break compatibility in 2.1.x.
Unbundling wasn't done as the module uses the internal speex_free,
so it would require some more work.
2016-10-30 14:51:31 +01:00

46 lines
1.5 KiB
C++

/********************************************************************
* *
* THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. *
* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
* *
* THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2001 *
* by the XIPHOPHORUS Company http://www.xiph.org/ *
* *
********************************************************************
function: fft transform
last mod: $Id: smallft.h,v 1.3 2003/09/16 18:35:45 jm Exp $
********************************************************************/
/**
@file smallft.h
@brief Discrete Rotational Fourier Transform (DRFT)
*/
#ifndef _V_SMFT_H_
#define _V_SMFT_H_
#ifdef __cplusplus
extern "C" {
#endif
/** Discrete Rotational Fourier Transform lookup */
struct drft_lookup{
int n;
float *trigcache;
int *splitcache;
};
extern void spx_drft_forward(struct drft_lookup *l,float *data);
extern void spx_drft_backward(struct drft_lookup *l,float *data);
extern void spx_drft_init(struct drft_lookup *l,int n);
extern void spx_drft_clear(struct drft_lookup *l);
#ifdef __cplusplus
}
#endif
#endif